Pneumatic Timers and Counters

Kuhnke’s wide selection of Counters and Timers provide easy solutions for constructing pneumatic logic systems. Counters are available with 4 to 8 digit readouts, panel or base mounting with several options to suit the application. Five versions of pneumatic timers with ranges from .1 second to 100 hours with a variety of valve and mounting options provide the most complete product line available in the industry. Counters are constructed with durable molded bodies. White digits on black background make units easy to read. Units are available with or without manual resets and a variety of options. A special type allows the counter to be reset by a pneumatic pulse in addition to a manual reset button. A predetermining counter includes an output valve to stop production when the count is reached. Timers depending on design, are constructed of molded bodies usually with aluminum bases to provide sturdy fitting connection points. Timers are available in on delay or off delay versions and incorporate a 3/2 or 5/2 output valve. Typical timing circuits are included in the catalogue section to assist in designing easy installations.

Counters and Timers

Series 50 Counters Kuhnke System Logic Devices

Panel Mounted Pneumatic Counter

50670 The pneumatic counter can be used as an event, part or lot counter. The counter registers pneumatic impulses on a 6 digit display. Totalizer operates with impulse pressure between 2 and 8 bar. The counter can be reset either manually via a reset button, or by a pneumatic signal to a specially provided port.

Technical Specifications Op. Pressure: 2-8 bar Connections: M5 ports Display: Black with white digits (6 numbers) Reset: Manual button on cover or pneumatic signal of 180 ms duration.

Media: Filtered air Control Connections: Port Z - Counter pulse input Port Y - Reset Duty Cycle: Continuous Min. pulse duration 8 ms Min. pause 10 ms Operating Ambient: 0ºC to + 60ºC

Weight: 7 grams Materials: Molded body Dimensions: Face plate: 60mm W x 50mm H Behind panel: 62mm Deep x 50mm Wide x 26mm High Panel Cut Out: 52mm Wide x 28mm High 2 mounting holes required. Hardware included

6

Counters and Timers

Kuhnke System Logic Devices Series 50 Counters

Panel Mounted Pneumatic Predetermining Counter

50680

Counter is used for selecting the number of desired operations on a production run. The number of operations is set on the lower scale by holding down a white button and setting the count to be reached. The upper scale is a 5 digit totalizer. When the count reaches the lower scale setting, a built-in 3/2 valve is switched to provide a pneumatic output to stop machine or signal that the count has been reached. Valve remains switched until counter is reset. The counter operates with an impulse pressure between 2 and 8 bar and can be reset either manually via a reset button or by a pneumatic signal to a specially provided port.

Technical Specifications

Op. Pressure: 2-8 bar. Connection: M5 ports Display: Black with white digits (5 numbers) Reset: Manual button on cover or pneumatic signal of 180 ms duration. Media: Filtered air

Control Connections: Port Z - Counter pulse input Port Y - Reset Port P - Supply air to 3 way valve Port A - Output signal from valve Duty Cycle: Continuous Min. pulse duration 8 ms Min. pause 10 ms Operating Ambient: 0ºC to +60ºC Weight: 12 grams

Materials: Molded body Dimensions: Face plate: 60mm W x 75mm H Behind panel: 62.5mm Deep x 51mm Wide x 50mm High Panel Cut Out: 52mm Square 2 mounting holes required. Hardware included.

7

Counters and Timers

PM Counters Kuhnke System Logic Devices

Panel or Base Mounted Pneumatic Counters

Options For Low pressure version (0.5 to 2 bar) add an “L” prefix to the catalogue number. A manual reset guard can be added to help prevent accidental resetting of the counter. Add suffix “V” to the catalogue number. For a spade key reset add suffix “VS” to the catalogue number. For a secret reset add an “S” suffix. Standard designs have 10-32 NPT ports.

Technical Specifications

Op. Pressure: 1.5 to 6.5 Bar Std. 0.5 to 2 bar Low Press. Connections: 10-32 port, Option 1/8. Display: Black with white digits Reset: With or without manual reset.

Media: Filtered air

Duty Cycle: Continuous Min. pulse duration 8 ms Min. pause 10 ms Operating Ambient: 0ºC to + 60ºC

Weight: 7 to 13 grams Materials: Molded body, steel frame.

Dimensions (approx.): 4 Digit – 22mm H x 33mm W x 66mm D. 6,8 Digit – 22mm H x 50mm W x 66mm D. For Screw mtg. add 1” to H dim. For base mtg. add 1 “ to D dim. Panel Cut Out: 4 Digit – 22mm H x 32mm W 6,8 Digit – 22mm H x 47mm W

Catalogue Number

Panel Mounted Surface Mounted Description Standard Clip Mtg.

Screw Fastening

With Base

Stud Mounting

4 Digit PM14-21 PM14-11 APM14-01 PM14-01

6 Digit PM16-21 PM16-11 APM16-01 PM16-01 With

Manual Reset

8 Digit Not Available Not Available Not Available Not Available

4 Digit PM14-20 PM14-10 APM14-00 PM14-00

6 Digit PM16-20 PM16-10 APM16-00 PM16-00 Without Manual Reset

8 Digit PM18-20 PM18-10 APM18-00 PM18-00

These pneumatic totalizers can be used as an event, part or lot counter. The counter registers pneumatic impulses on 4, 6 or 8 digit displays. Standard units operate with impulse pressures between 1.5 and 6.5 bar. Low pressure models operate between 0.5 and 2 bar. A variety of options include panel mounting with screws or mounting clips and surface mount with base or rear stud. The counters are available with or without manual reset.

Standard Clip Mounting

Base Mount Base Mount

8

Counters and Timers

Kuhnke System Logic Devices Series 51 Mini Timer

Miniature Panel Mounted Timer (Up to 5 minutes)

2 to 30 Seconds 51020-03 20 to 300 Seconds 51020-30

The Mini-timer is an adjustable panel mounted time delay device (normally closed valve). Timing is set by adjusting the front dial. The timer is equipped with 2 vertical scales that indicate the set time and the time remaining in the cycle (countdown time). To begin the timing operation, air pressure is applied to port one. When the set time is reached the internal valve is switched over to provide an output at port 2. The valve remains open until the input air is switched off. Removing the air supply at any time resets the timer. The mini timer is constructed of a molded body with a clear plastic lens for viewing the scales. Ports, M5 are located on the rear of the unit. The timer is panel mounted with a built in retaining clip.

Accessories A molded bezel (catalogue no. 51025) can be added to the panel to provide screw fastening of the timer for easy removal. The bezel cutout size is 52 x 52mm and the bezel dimensions are 60mm wide x 75mm high. A rear mounting bracket, (catalogue no. 51031) can be used to mount the timer in the rear of the panel or on a DIN rail as required. The bracket has built-in connections for side M5 porting.

Rear Mounting

Technical Specifications

Op. Pressure: 2 to 6 bar Connections: M5 Media: Filtered, dry air. Non-lubricated Operating Valve: 3/2 (NC) - internal exhaust Orifice size - 1mm Flow @ 6 bar – 40 litre Timing Start: Application of line pressure to port 1.

Reset: By removal line pressure Reset Time: 200 ms Repeatability: ± 0.3 Sec. 51020-03 ± 3 Sec. 51020-30 Time Setting: Via adjustment knob. Setting Accuracy: ± 0.6 Sec. 51020-03 ± 6 Sec. 51020-30 Materials: Molded housing.

Operating Ambient: 0ºC to 60ºC Dimensions (inches): 24mm W x 48mm H x 68mm D. Panel Cutout: 20mm W x 45mm H. Mounting: Retaining Clip.

9

Counters and Timers

Series 51 Timers Kuhnke System Logic Devices

Rear Mounted - Set-it, Forget-it Timer (Up to 3 minutes)

The Series 51 timer is an adjustable precise time delay control device. The timer is available with either an on delay- (NC) or off delay- (NO) 3/2 built-in valve. It is designed for mounting along with valves or other logic devices and is available with M5 bottom ports, or 1/8 side ports. Bottom ported timers can also be panel mounted using (2) threaded M3 inserts on the top cover. Timing operation can be set up in 2/2; either via direct connection of the pressure line to be timed (1/8 ported only) or via a separate pilot signal. When pressure is applied to the input (or pilot port) the timing sequence begins by setting a vacuum within the timer. Using atmospheric pressure (independent of line pressure), the timer begins the preset timing cycle. At the end of the cycle an internal 3/2 valve is switched providing an output. The timer resets automatically after removal of the control signal.

Side Ported 1/8

Bottom Ported

M5 Technical Specifications Op. Pressure: 1.5 to 8 bar Connections: M5 (10-32) or 1/8 ports Media: Filtered air, non lubricated. Operating Valve: 3/2 - internal exhaust Orifice size - 2mm Flow @ 6 bar – 200 liters Timing Start: Application of pilot (or Line) pressure to control port.

Reset: By removal of pilot (or Line) signal –independent of whether the time interval has elapsed or not. Reset Time: 200 ms Repeatability: ± 2% of selected time. Time Setting: Via adjustment knob. Operation: Timing cycle uses atmospheric pressure drawn into vacuum. Air Consumption: During timing cycle only -3 l/m

Materials: Polyamide housing, aluminum base, Buna N seals. Operating Ambient: -10ºC to 60ºC Dimensions (mm): M5 port 1/8 port Height 92 105 Width 36 36 Length 70 70 Weight 35 gr. 45 gr. Mounting: Via 4 holes in base.

10

Counters and Timers

Kuhnke System Logic Devices Series 51 Timers

Selection Chart Diagrams

Connections 1/8 Side Ported Timers

Control input signal must be at the same pressure as system line pressure.

Catalogue Number Timing Range 1/8 Side

ported M5 Bottom

Ported .5 to 60 Seconds 51006-00US 51006-00 1 to 120 Seconds 51012-00US 51012-00

On Delay (NC) 1 to 180

Seconds 51018-00US 51018-00

.5 to 60 Seconds 51006-01US 51006-01 1 to 120 Seconds 51012-01US 51012-01

Off Delay (NO) 1 to 180

Seconds 51018-01US 51018-01

On Delay

(Normally Closed) Off Delay

(Normally Open)

Side ported timers are supplied with a 10/32 port plug to set up preferred connections.

For a separate (isolated) pilot signal, insert a 10-32 plug into the internal port (inside port 12 or 10). Use loctite or equal to seal the port. Then connect a separate pilot input signal at port 12 (10). For using the same source as the supply for the output valve and pilot signal, plug port 12 (10) using a 1/8 plug and connect the switched air supply to port 1. Discard the 10-32 plug.

10-32 (M5) Bottom Ported Timers

Separate Pilot Signal

Supply and Pilot Same Source

Timer is supplied only with separate (isolated) control input signal port. Connections are located on the underside of the timer base. The bottom ported timer can be panel mounted using (2) M3 threaded inserts on the top cover.

Port Identification 12 - Control input signal (NC version). 10 - Control input signal (NO version). 1 – Air supply. 2 – Valve output.

Power Connections For installations requiring larger output valves, use the standard timer and connect a pneumatically operated single air piloted 3/2 or 5/2 valve of the size required to the timer output. Contact factory with size requirements. Typical Circuits See typical timing circuit diagrams at the end of the timer catalogue section for help in constructing pneumatic timer circuits.

11

Counters and Timers

PMT Timers Kuhnke System Logic Devices

Panel or Subplate Mounted Pneumatic Timer (Up to 3 Minutes)

The Type PMT timer is an adjustable precise time delay control device. The timer is available with an on delay (NC) output. Timing operation is dependent upon the input of a separate control signal which starts the timing sequence by setting a vacuum within the timer. Using atmospheric pressure (independent of line pressure), the timer begins the preset timing cycle. At the end of the cycle an internal 3/2 valve is switched providing an output. The timer resets automatically after removal of the control signal. The PMT has a separate subplate enabling the unit to be supplied with 10-32 or 1/8 porting. The timer can be panel mounted with a bezel, or in the rear on a sub plate.

Panel Mounted PMT timer with SPA1B subplate

Technical Specifications Op. Pressure: 1 to 6.5 bar. Connections: 10-32 or 1/8 ports via bottom sub plate Control Pressure: (A) Low Press. – 1 to 6.5 bar (B) Standard – 2 to 6.5 bar Media: Filtered air or non-aggressive gas, non-lubricated. Timing Valve: Flow @ 6.5 bar –0.3 liters Dial Indicator: Displays set time. Timing Start: Application of pilot pressure to control port.

Reset: Automatic by removal of pilot signal. Reset Time: 60 ms @ 3 bar Repeatability: ± 3% of selected time. Time Setting: Via adjustment knob. Accuracy ±10% Operation: Timing cycle uses atmospheric pressure drawn into vacuum. Air Consumption: 0.3 l/m @ 6.5 bar

Materials: Acetal and polycarbonate enclosure. Diaphragms- Buna N Operating Ambient: OºC to 65ºC Dimensions (mm): (including sub plate) Height – 55 Width – 38 Depth – 108 Mounting: Via sub plate (2 holes) or if Panel mounted, through a 38mm square cutout. 2 mounting holes required, hardware included.

12

Counters and Timers

Kuhnke System Logic Devices PMT Timers

Selection Chart

Catalogue Number Timing Range Subplate

Mounting Panel Mount

Vertical Bezel Panel Mount

Horizontal Bezel

0.3 to 3 Seconds PMT1D1B3 PMT1D2B3 PMT1D3B2

1 to 10 Seconds PMT1E1B3 PMT1E2B3 PMT1E3B2

3 to 30 Seconds PMT1F1B3 PMT1F2B3 PMT1F3B2

6 to 60 Seconds PMT1G1B3 PMT1G2B3 PMT1G3B2

12 to 120 Seconds PMT1H1B3 PMT1H2B3 PMT1H3B2

18 to 180 Seconds PMT1J1B3 PMT1J2B3 PMT1J3B2

Diagram Port Identification 6 - Control input signal. 1 – Air supply. 2 – Valve output. Subplate (Required) The PMT, whether panel or base mounted, requires a subplate for connecting fittings and air lines. Several types are available to suit connection needs. The subplate is supplied loose and unmounted, as a separate item.

Catalogue Number Port Location

10-32 Ports 1/8 NPT

3 Bottom ports SPAIA SPA2A

6 Side ports SPA1B SPA2B

6 Side and 3 Bottom ports SPA1C SPA2C

Low Pressure Version The PMT standard control input pressure range is 2 to 6.5 bar. For a low pressure pilot actuator (1 bar min.), change the “B” in the catalogue number to “A”. Subplate Mounting Position Standard timers are supplied with the subplate mounting position at the bottom of the timer. For mounting the subplate in another position, change the last digit of the catalog number as follows: 1 for top; 2 for right side; 3 for bottom; 4 for left side. Power Connections For installations requiring larger output valves, use the standard timer and connect a pneumatically operated single air piloted 3/2 or 5/2 valve of the size required to the timer output. Contact factory with size requirements. Typical Circuits See typical timing circuit diagrams at the end of the timer catalogue section for help in constructing pneumatic timer circuits.

13

Counters and Timers

PT Timers Kuhnke System Logic Devices

Panel or Rear Mounted Pneumatic Timer (Up to 60 Minutes)

The PT timer is an adjustable precise time delay pneumatic device. The timer is available with an on delay (NC), or an off delay (NO) output. The timer has 1/8 NPT ports. The PT series timer combines a pneumatic timing mechanism with a floating spool valve assembly to provide a wide range of adjustable time control for fluid power systems. The timing assembly, which operates independently of the control pressure, is available in nine different ranges from one tenth of a second to 60 minutes, adjustable by means of a time-calibrated dial. Timing action is initiated by a motor diaphragm operated by a control pressure of from 0.5 to 10 bar. The timer is equipped with a multi purpose 3/2 output valve allowing it to be used as normally open, normally closed or as a diverter. The PT is designed for panel or surface mounting. Panel mounted versions include a 88mm square bezel while surface mounted units are equipped with a bracket for vertical mounting. If required, The PT can be specially calibrated for mounting horizontally.

Surface Mounted PT Timer

Technical Specifications Op. Pressure 0.5 to 10 bar.I Connections: 1/8” NPT ports Control Pressure: 0.5 to 10 bar Media: Filtered air or non-aggressive gas, non-lubricated. Output Valve: Flow @ 6.5 bar – 250 liters Multi purpose 3/2 spool. Dial Indicator: Displays set time. Timing Start:

On Delay - Application of pilot pressure to control port. Off Delay - Removal of pilot pressure to control port.

Reset: On Delay - Removal of pilot pressure from control port. Off Delay - Application of pilot pressure to control port. -

Reset Time: 60 ms @ 3.5 bar Repeatability: Up to 200 sec. - ± 5%. Over 200 sec. - ± 10%. Time Setting: Via dial. Accuracy ±10% of full scale. Operation: Timing cycle uses atmospheric pressure. Materials: Zamak housing, polycarbonate knob, aluminum valve with stainless spool. Diaphragms - Buna N

Operating Ambient: -30ºC to 70ºC Dimensions (mm): Height – 134 Width – 63 Depth – 63 Mounting: Surface or panel mounted. Drilling Plan (panel mount): 81 dia. hole.

14

Counters and Timers

Kuhnke System Logic Devices PT Timers

Selection Chart

Catalogue Number Standard Vertical

Surface Mount Panel Mounted Timing Range

On Delay

Off Delay

On Delay

Off Delay

0.1 to 1 Second PT31A PT41A PT35A PT45A

0.5 to 5 Seconds PT31B PT41B PT35B PT45B

1.5 to 15 Seconds PT31C PT41C PT35C PT45C

5 to 50 Seconds PT31D PT41D PT35D PT45D

20 to 200 Seconds PT31E PT41E PT35E PT45E

1 to 300 Seconds PT31K PT41K PT35K PT45K

1 to 10 Minutes PT31F PT41F PT35F PT45F

3 to 30 Minutes PT31H PT41H PT35H PT45H

6 to 60 Minutes PT31I PT41I PT35I PT45I On Delay Timer Operation Off Delay Timer Operation

15

Options Surface mounted units are calibrated for mounting in the vertical position. If horizontal mounting is required, add suffix “Y1” to the catalogue number. For a stainless steel fitting mounted on the pilot port add suffix “SS”. To include a Dial Stop set at the factory (which prevents settings above or below a given number) add suffix ”DS” and specify setting. For a Tamper Proof Cover add suffix “TP” to the catalogue number. Power Connections For installations requiring larger output valves, use the standard timer and connect a pneumatically operated single air piloted 3/2or 5/2 valve of the size required to the timer output. Contact factory with size requirements. Typical Circuits See typical timing circuit diagrams at the end of the timer catalogue section for help in constructing pneumatic timer circuits.

Port Identification Port C - Control input signal 1 - System air supply 2 - Valve output 3 - Exhaust

Applying pilot pressure of at least 100ms in duration to the control port shifts the valve. When the pilot pressure is removed, the timing sequence begins. After the timer reaches its set time, the valve switches off. Re-applying the pilot pressure resets the timer and valve.

Pilot pressure is applied to the control port to start timing. After the timer reaches its set time, the valve switches over. Removal of the pilot signal at any time resets the timer.

Diagrams

On Delay Off Delay

Counters and Timers

Series 54 Timers Kuhnke System Logic Devices

Panel Mounted Pneumatic Timer (Up to 100 Hours)

The 54 Series timer is a totally pneumatic device with +/-1% repeatability. Timing is fully adjustable throughout the timing range by a knob on the front dial face. The standard timer is equipped with a special 5/2 valve which provides for on or off delay timing (depending on plumbing connections). The front dial displays set time and the time remaining in the cycle. The operation of the timer depends on the input of a separate control signal. The control signal drives a regulated air motor and gear chain to provide accurate timing regardless of control air pressure fluctuation. The timer resets automatically (approx. 200ms) after removal of control pressure signal. A special version of the timer includes a rotor stop option which allows for an external valve to be added to permit a “count down on hold” function. The 54 Series timer is self-contained in a panel mounted lexan case with a front timing adjustment knob. Connections are made at the rear of the timer. Spring clips are used to panel mount the unit.

Technical Specifications Op. Pressure:

0-10 bar Control Pressure:

1.5 to 10 bar non-lubricated air

Output Valve: 5/2 Flow – 200 liters @ 6.5 bar Orifice size - 2mm

Connection: M5 ports

Media: Filtered air or gas. Non-lubricated.

Indicators: Displays set time and time remaining before valve actuation.

Time Setting: Via front dial knob. Adjustable throughout timing range

Accuracy of Setting: ± 2%

Repeatability: ± 1% of end scale value.

Operation: Independent regulated air motor. Air consumption 10 l/m Output air piloted 5 way valve.

Reset: Automatic - by removal of control pressure.

Reset Time: 200 ms.

Timing Sequence: On delay or off delay depending on valve connections.

Operating Ambient: 0ºC to 60ºC Materials:

Lexan case, cast aluminum rear housing, nylon, brass, and stainless alloy mechanism.

Dimensions (mm): Faceplate –72 square Behind panel –112 D x 66 H x 66 W.

Panel Cutout: 66mm square Mounting:

Spring clips.

16

Counters and Timers

Kuhnke System Logic Devices Series 54 Timers

Selection Chart Timing Sequence

Catalogue Number Timing Range

Standard Timer

With Rotor Stop Option

0.3 to 10 Seconds 54021 54050

3 to 100 Seconds 54022 54051

0.3 to 10 Minutes 54023 54052

3 to 100 Minutes 54024 54053

0.3 to 10 Hours 54025 54054

3 to 100 Hours 54026 54055 Diagrams

Off Delay Blocked Port 4

On Delay Blocked Port 2

t = Selected time delay. t = Total duration of cycle.

Timer output valve is 5/2, with M5 connections. Valves are supplied from factory blocked with a cap nut (port 4) for 3/2 off delay. For on delay, move cap nut to port 2. For full 5/2 operation remove nut. Port Identification Port 12 - Control input signal (on timer body). Valve - 1 - System air supply 2 - Valve output "off delay connection" 3 - Exhaust for port 2 4 - Valve output "on delay connection" 5 - Exhaust for port 4 Replacement Parts Control port input filter 72754500-00 Output valve 54530

Rotor Stop Option (Countdown on Hold) A rotor stop option is available to override the timing action or to hold the timer valve in its switched position after the timer has completed its cycle, and signal pressure is removed. Option provides 2 additional rear ports connected via tube, which allows valves or other logic devices to be spliced into the internal circuit between the pilot signal regulator and rotor assembly. For holding timer valve in its switched position or to place "timing on hold”, an external 3/2 valve (NO) can be used to block the flow to the air motor (connected between rotor stop ports 1-2). If timing on hold is desired, the pilot signal must remain on throughout the entire cycle. Power Connections For installations requiring larger valves, use the standard timer and connect a pneumatically operated single air piloted 3/2 or 5/2 valve of the size required to the timer output. Contact factory with size requirements. Typical Circuits See typical timing circuit diagrams at the end of the timer catalogue section for help in constructing pneumatic timer circuits.

17

Counters and Timers

Typical Timing Circuits Kuhnke System Logic Devices Timing Using a Manual Push-Pull Valve

Typical Timer

On Delay

Push-Pull valve can be used to start and stop system manually while providing timing to the circuit. A 5/2 valve can also be used when operating a double acting cylinder, or for alternating outputs. Operation Pushing in knob starts air flowing to device and to timer. When the timer reaches set time, it sends a signal to the reset port of the push-pull valve shutting down the air output. To stop the process, pull the knob out, shutting off the air and resetting the timer. Typical Item Selection Any on delay timer (Consider length of time required and mounting preference). Push-Pull Valve- Cat. nos. 76022-27-22 (3/2, 1/8 ports), 76023-27-42 (5 way, 1/8) or 76043-27-42 (5/2, 1/4). Alternative- Lever operated valve, pneumatic reset, contact factory for information.

Timer Output

To Device

Push-Pull Knob with Pneumatic Reset Port Air

Supply Timer Control Port

Air Supply (Connection depends

on timer used.)

5/2 Push Pull Knob Valve When using a 5/2 valve note output connections. All other connections same as 3/2.

To Timer Control Port

Converting an On Delay timer output to an Off Delay output

On delay timer signals can be converted to an off delay signal with the use of an interposing normally open 3/2 air piloted valve. Operation Air pressure is applied to the timer and to the operating device through the 3/2 piloted valve. When the timer reaches set time, it’s output switches the air piloted valve shutting off the air to the device. Removing the air signal from the timer resets the air piloted valve and air flows again to the device. Typical Item Selection Any on delay timer (Consider length of time required and mounting preference). 3/2 air piloted valve (NO) Cat. no. 76036-71-31 (1/8). For larger valves contact factory for information.

To Device

Normally Open 3/2 Air Piloted Valve

Typical On Delay Timer

Air Supply

Air Supply

18

Counters and Timers

Kuhnke System Logic Devices Typical Timing Circuits

A timing sequence can be established from a momentary pressure signal using an interposing pneumatically operated valve. The most common signal used is from a pushbutton, but inputs from limit switches, foot pedals or other devices can be used to initiate timing. The size of the air piloted valve determines the air volume output. Operation Pressing the pushbutton sends a signal to switch the air piloted valve on. The valve output is connected to the device to be controlled and to the timer control port. When the timer reaches it’s set time it sends a signal back to the air pilot valve resetting it, turning off the output to the device. The timer resets. Typical Item Selection Any on delay timer (consider length of time required and mounting preference). Pushbutton 3/2 (choice of colour)- Cat. nos. 76022-62-21 (Red), -23 (Black) or -24 (Green). Double air piloted valve 3/2- Cat. no. 76022-71-22 (1/8 Ports). For larger sizes of double air piloted valves use a 5/2 valve and plug port 2 for 3/2 operation. Connect device and timer control to port 4 of 5/2 valve. Use Cat. nos. 76047-81-42 for 1/4 ports or 76067-81-42 for 1/2 ports.

Optional Stop Button A stop pushbutton can be added to the circuit if required. The stop button resets the air piloted valve. The start signal must be off to avoid conflicting signals at the air piloted valve.

Pushbutton Valve - 3/2

To port 10 of Air pilot valve

OR Logic Valve

From output of timer

5/2 Double Air Pilot Valve A 5/2 double air pilot valve can be substituted when operating a double acting cylinder or for dual alternate outputs. Note output connections. All other connections same as the 3/2 diagram.

To Timer Control Port

To Device

Timer Control

Port Typical Timer

On Delay Pushbutton Valve 3/2 (or other valve with momentary output signal shorter than set time delay).

Timer Output

Air Supply

(Connection depends on timer used.)

Double Air Piloted Valve 3/2

Air Supply

Air Supply

Timing Using a Momentary Start Signal

19

Counters and Timers

Typical Timing Circuits Kuhnke System Logic Devices

Continuous Cycling Timer Circuit

Timer # 2 On Delay

Timer # 1 On Delay

Output A

Output B (if required)

Double Air Piloted Valve 5/2.

Series 54 Timer Connections Timer diagrams shown are 3/2types. 54 Series timers have a 5/2 valve output with an isolated pilot port.

To port 12 (14) of air pilot valve

Air Supply

Continuous cycling is accomplished by the use of 2 timers operating a double air piloted valve. Off and on times are dependent on the type and set time of timers used. The size of the air piloted valve determines the air volume output. The position of the air piloted valve determines the start up of the timing sequence. If the timing sequence must be restarted in a specific order, a reset circuit must be added at port 12 of the air piloted valve to move it to the start position prior to resuming operation. Operation System pressure is turned on. Air flows through port 2 of the pilot valve to drive timer #1 and the device being controlled. When timer 1 reaches set time, it sends a signal to port 14 of the pilot valve, switching the air output to port 4, starting the timing sequence on timer #2 and shutting down timer 1 and the output to the device being controlled. When timer 2 reaches set time, a signal is sent to port 12 of the piloted valve resetting it and restarting the cycle. Typical Item Selection Timers- Any on delay timer. (Consider length of time required and mounting preference.) Double Air Piloted Valve- Cat. nos. 81014 (M5 ports), 76027-71-42 (1/8), 76047-81-42 (1/4), or 76067-81-42 (1/2).

To port 2 (4) of air pilot

valve

Air supply to pilot valve

From output of Timer 2

OR Logic Valve

Toggle Lever Valve (Maint. Pos.)

To port 12 of Air Pilot Valve

Optional On-Off Valve with Reset Circuit

20

Counters and Timers

Kuhnke System Logic Devices Typical Timing Circuits

Continuous Cycling Timer Circuit Using PT Timers

Using a Momentary Start Signal with an Off Delay PT 41 or PT45 Timer

Air Supply (note port 3 connection)

To Device

Pushbutton Valve 3/2 (or other valve with momentary output signal )

Air Supply

Continuous cycling is accomplished by the use of 2 timers operating a spring return air piloted valve. Off and on times are dependent on the time range of the timers used. The size of the air piloted valve determines the air volume output. Operation System pressure is turned on. Air flows through port 2 of Timer #2 to drive timer #1 and to operate the air pilot valve turning on air to the device being controlled. When timer 1 reaches set time, it sends a signal to port C of timer 2, shutting down the air supply to the air piloted valve and timer 1. This enables timer 2 to begin timing. When timer 2 reaches set time, it operates and the cycle is repeated. Removing the air supply resets the circuit to the start position. Typical Item Selection One On Delay PT timer and one Off Delay PT timer with the required time ranges. Single air piloted, spring return valve, 3/2, cat. no. 76026-71-21 (1/8), 76046-71-21 (1/4), 76066-81-21 (1/2). For operating double acting cylinders use 5/3 valves.

Air piloted Valve, Spring Return

Timer # 1 PT31 On Delay

Timer # 2 PT41 Off Delay

Air Supply

Air Supply

One shot timing can be initiated from a momentary air signal using a PT41 or PT45 off delay timer. Operation A momentary pilot pressure applied to the control port from a pushbutton or similar device switches the timer valve and provides an output. Releasing the button starts the timing cycle. When the set time is reached, the valve operates, shutting down the output to the device being controlled. Typical Item Selection Any PT41 or PT45 timer. Pushbutton catalogue number 76022-62-21 (Red) or other valve with a momentary output signal.

To Device

Timer PT41 or PT45

21

Counters and Timers

Typical Timing Circuits Kuhnke System Logic Devices Timing using Start-Stop Pushbuttons

To Device

Typical Timer

On Delay

Timer Control

Port

Timer Output Stop

Button 3/2

Air Supply (Connection depends on timer used.)

OR Logic Valve

Double Air Piloted Valve 3/2

Start Bu on tt3/2

Air Supply

5 Way Double Air Pilot Valve A 5 way double air pilot valve can be substituted when operating a double acting cylinder or for alternating outputs. Note output connections. All other connections same as the 3/2 diagram.

Separate start-stop pushbuttons can be used in conjunction with a double air piloted valve and an “or” logic valve to control a timing circuit if required. A wide selection of types and colours of pushbuttons is available to meet design requirements. The size of the air piloted valve determines the air volume output. Operation Pressing the start pushbutton sends a signal to switch the air piloted valve on. The valve output is connected to the device to be controlled and to the timer control port. When the timer reaches it’s set time it sends a signal back to the air pilot valve resetting it, turning off the output to the device. To stop the timing (ie. emergency stop) press the stop button, which sends a signal via the “or” logic valve to reset the double air piloted valve.

To Timer Control Port

Typical Item Selection Any on delay timer (consider length of time required and mounting preference). Pushbutton 3/2 (choice of colour)- Cat. nos. 76022-62-21 (Red), -23 (Black) or -24 (Green). Double air piloted valve 3/2- Cat. no. 76022-71-22 (1/8 Ports). For larger sizes of double air piloted valves use a 5/2 valve and plug port 2 for 3/2 operation. Connect device and timer control to port 4 of 5/2 valve. Use Cat. nos. 76047-81-42 for 1/4 ports or 76067-81-42 for 1/2 ports. Logic valve-“OR” cat. no. 47003.

22